Purpose Bariatric surgery increases the risk of lower birth weight, small-for-gestational-age
(SGA) infants, and preterm birth in a subsequent pregnancy. However, the factors that …

Importance Inequalities in preterm infant mortality exist between population subgroups
within the United States. Objective To characterize trends in preterm infant mortality by …

Importance Lower educational attainment is associated with increased risk of adverse
pregnancy outcomes, but it is unclear which pathways mediate this association. Objective To …

Preterm birth (PTB) is the leading cause of death in children under five, yet comprehensive
studies are hindered by its multiple complex etiologies. Epidemiological associations …

Background All over the world, especially in the developed countries, maternal age at birth
is rising. This study aimed to assess the role of maternal age on the occurrence of preterm …

Necrotizing enterocolitis (NEC) is a complex disease with a multifactorial etiology. As the
leading cause of intestinal morbidity and mortality among premature infants, many resources …

Birth cohort studies are the most appropriate type of design to determine the causal
relationship between potential risk factors during the prenatal or postnatal period and the …

Objective To evaluate whether abdominal–pelvic radiotherapy for childhood cancer impairs
uterine function and increases the risk of pregnancy complications and adverse pregnancy …

Importance Low socioeconomic status is associated with higher all-cause mortality and risks
for aging-related diseases. Biological aging is a potential process underlying health …

Background Per-and polyfluoroalkyl substances (PFASs) are widely used in China, but little
is known about the association between prenatal PFASs exposure and fetal reproductive …